Emerald Beskrivning

K3 Engine Management System

The new K3 ECU is the most significant step forward for Emerald in over
a decade of ECU design, development and manufacture. The new firmware
and software packages take Emerald into a realm where it can stand
comparison with systems costing up to three times as much. For example
the K3 has a CAN bus (controller area network) and now links direct to
the AIM dashboard. When you check out the new features that come as
standard with the Emerald K3 ECU I think you will agree that you cannot
find better value for money anywhere in the ECU market place.
Considering the ability to upgrade our previous 32 bit M3Dk to the
latest specification, it makes the decision to purchase an Emerald ECU
a true performance investment: Emerald - here today and here tomorrow.

TRIPLE MAP FACILITY

Using a simple, user configurable, voltage input you can now switch
between three completely different maps held inside the ECU’s
memory. This is not just a case of having different fuel or ignition
maps. The Emerald K3 ECU holds the total map parameters in memory
allowing you to conveniently switch between maps with different warm up
values, rev limits, and boost control settings, etc, as well as fuel
and ignition timing.

As an example you can set up one map for unleaded,
another for high octane fuel and a third for the new E85 BioEthanol
fuels. You can have different boost level settings on a turbo engine
and switch between maps as you drive. You can even have different boost
levels in different gears.

The ability to switch maps on the fly from the
dashboard allows you to change fuel grades mid journey, lower the rev
limit for a “guest” driver or run a slightly weaker mixture
for motorway cruising - as opposed to a maximum attack track map where
everything is set up for power and nothing else. Experience and
imagination will undoubtedly find many other uses for this superb new
triple map feature.More Details

ADAPTIVE MAPPING

Fuelling learns as you driveCurrently
standard production ECUs have a self learning system for the fuelling
which ensures that the air to fuel ratio remains where the car
manufacturer meant it to be. This has only been possible with the
development of the wide band lambda sensor. Consequent mass production
of wide band sensors has now made these affordable to car builders and
modifiers working on a budget. The new K3
software and firmware package includes an adaptive mapping system but
unlike the OE systems our target maps are fully adjustable by you, the
end user. The adaptive learning map exactly overlays the base fuelling
map so you can have exactly the air to fuel ratio that YOU want
anywhere in the speed and load range.The target and correction maps are now colour coded
so you can instantly identify rich or weak areas (red is rich and blue
is weak). This is yet another example of Emerald’s hands-on
approach to ECU software design; practical as well as pleasing to the
eye.More
Details

Need
more flexibility? You have a fourth adaptive mapping screen that allows
you to switch from closed loop to open loop to adaptive mapping from
one load cell to another (feed-back mode) – giving you total
control at all times.More
Details

Taking a voltage input from 0 to 5 volts you can
define the signal from any of the currently available aftermarket wide
band readers. You can tell the ECU what to learn, when to learn it, by
how much and how quickly. You get total control of the self mapping
system and you can have different AFR values for all three different
maps in the ECU. That’s real flexibility.More Details

Boost control

Boost
control against engine rpm is an essential part of turbo control but
the better systems have always had boost control against throttle
position as well as rpm. This gives you the ability to back off the
boost as you lift the throttle – giving much more control than
the all-or-nothing approach of some systems. Emerald has now added boost control functions input
from the gear ratio. With input from a road wheel sensor the ECU
calculates which gear you are in and therefore you can run different
boost levels in different gears. There is also the facility to have the
boost control over-ridden from a control knob on the dash giving the
driver total control over the engine boost parameters. By adding this
to the triple map switching facility we believe there has never been a
more flexible system on the market at this price.

Individual cylinder trimsThe
K3 ECU can now trim cylinders on an individual basis allowing simple
calibration of unmatched injectors or fuel and ignition trims to suit
individual cylinder efficiencies. Each cylinder can be trimmed with
positive or negative gains.

EXHAUST GAS TEMPERATURE

Closed loop on EGT for boost and fuelling
Exhaust
gas temperature is a critical measurement for high performance engines.
The new K3 software allows you to read-in exhaust gas temperature from
a suitable thermocouple via the CAN bus. You can then set port
temperature limits in the software to reduce turbo boost and/or add
fuelling to safeguard the engine. You also get the EGT reading on the
live mapping screen allowing you to monitor the engine during mapping.
The system already contains the calibration for the Audi/VW EGT sensor
making the new K3 a must for anyone using the VW Audi 1.8 Turbo engine
as a transplant. More
Details

FLEXIBLE SETTINGS

Movable Speed sites

Emerald has always been proud of the speed capability of the system.
Previously we had 32 speed sites at 500rpm intervals giving a total rpm
span from Zero to 15,500rpm. The system has been bench tested on a
simulated 36-1 trigger wheel to a staggering 44,000rpm - before it
started to lose accuracy! We were confident that our 15,500rpm rev
limit was no idle boast but to the best of our knowledge nobody has
ever made use of it. Users were therefore asking for more speed sites
over a lower speed range.
Consequently the K3 software package allows you to
move the speed site position; which means you can shuffle the sites
down the rpm range and have them anywhere you like. We wanted to give
even the most demanding customer no cause for complaint so the
resolution on site setting is one rpm (1 rpm). You can space them
anywhere you like, even or uneven and all speed related events, like
warm up tables, ignition sites, etc, move position to stay in
alignment. This means you can move sites half way through mapping and
carry on as if nothing had changed: practical as well as clever.More
Details

Movable load sitesIt’s the same story
with load sites. Rather than having them fixed you can now move them to
a resolution of one percent (1%) and with so many new throttle body
designs coming onto the market this allows you to set up the maps for
traditional butterfly bodies or roller barrels – whatever the
design. Should you feel the need to experiment you can have different
speed and load sites on each of the three available maps.
Load can also be read from a manifold air pressure
sensor rather than throttle angle simply by changing the software
configuration.More
Details

VVT Cam Control

K3 now features full control of
the Rover cam duration (VVC)
engine or variable cam timing
systems with algorithm for oil
temperature. No more dash
mounted on/off switches!More
Details

Sensor calibration

Traditionally, with an eye on simplicity, we at Emerald have stayed
with one fixed air and one water temperature sensor calibration file.
Due to the wide diversity of applications now available we have
subsequently included the ability to user define the sensor
calibration. Since we doubted that many of our customers would have
access to climate chambers we have adopted a clever software strategy
for sensor calibration.
You enter the sensor value at ambient (room)
temperature. Next you place the sensor in ice and record the value at
zero degrees C. Follow this up with boiling water (100 degrees C) and
the software does the rest. A true parabolic curve is drawn through all
three points allowing you to calibrate almost any sensor to the system
with little more than domestic equipment available around the house
(most people have a fridge and a kettle). Wherever we can we like to
make the complicated as simple as possible.
Injectors can now be calibrated for changing supply
voltage with the “user defined” option. Over the last ten
years we have seen power outputs in the tuning industry climb ever
higher. Ten years ago 200bhp was an outstanding engine; currently it is
not an uncommon output for a fast road conversion. This has meant that
a wide range of larger injectors are now being used and many have
wildly different requirements on voltage correction. We are currently
working on building up a library of correction curves for the most
common injectors.More
Details

These are just a few of the new features of the Emerald K3 ECU. What
isn’t so obvious is the support you get from Emerald via the air
conditioned 4WD rolling road cell and the Superflow 901 engine dyno
facility. Full technical support via Email gives first time users the
back-up they need. Clever as the new system is we will continue with
our policy of NEVER sending out an ECU without a suitable base map.
Even experienced operators appreciate having a starting point for
engine tuning while for the beginner it is absolutely essential. You
can download the software for free and explore the system more fully for yourself.
There’s never been a better reason for joining the ever
growing family of satisfied Emerald ECU users.